Characteristics and geochemical significance of heteroatom compounds in terrestrial oils by negative-ion electrospray Fourier transform ion cyclotron resonance mass spectrometry

摘要

Highlights ? Abundant heteroatom compounds in crude oils/source rocks were identified by FT-ICR MS. ? Kerogen type has an impact on NO compounds in oil/source rocks. ? Maturity has a clear control on carbon number and condensation of NO compounds. Abstract Terrestrial oils and rock extracts from the Nanpu Sag (Huanghua Depression, Bohai Bay Basin, China) were characterized by negative-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) and gas chromatography mass spectrometry (GC-MS). Molecular composition of neutral nitrogen and acidic oxygen compounds, mainly by N1, O1